Okay guys you have to have some idea what you want and what you like when you head out shopping. Don't be afraid to ask for opinions from friends and people that work at the clothing store, but don't let them persuade you to buy something you know you won't wear or like.
That doesn't mean you shouldn't try something new, but sometimes men need to ease into new styles slowly.
A few weeks before you go shopping watch what people are wearing at the office, on the street, and even on television. See something you like then look for it when you go shopping.
It is always great to get a girlfriends opinion when you are buying clothes but make sure you both know what you are shopping for so you are not just buying clothes to please her.